=========================================================================Ubuntu Security Notice USN-4058-1
July 15, 2019

bash vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

A system hardening measure could be bypassed.

Software Description:
- bash: GNU Bourne Again SHell

Details:

It was discovered that Bash incorrectly handled the restricted shell. An
attacker could possibly use this issue to escape restrictions and execute
any command.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
  bash                            4.3-14ubuntu1.4

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-4058-1
  CVE-2019-9924

Package Information:
  https://launchpad.net/ubuntu/+source/bash/4.3-14ubuntu1.4